71520981

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1\times {\mathrm{311}}^1$

素因数の和:601

約数の個数: 32

約数和(自身を含む): 112140288

約数和(自身を除く): 40619307

約数列:

[1, 3, 7, 21, 47, 141, 233, 311, 329, 699, 933, 987, 1631, 2177, 4893, 6531, 10951, 14617, 32853, 43851, 72463, 76657, 102319, 217389, 229971, 306957, 507241, 1521723, 3405761, 10217283, 23840327, 71520981]

約数ペア:

[(1, 71520981), (3, 23840327), (7, 10217283), (21, 3405761), (47, 1521723), (141, 507241), (233, 306957), (311, 229971), (329, 217389), (699, 102319), (933, 76657), (987, 72463), (1631, 43851), (2177, 32853), (4893, 14617), (6531, 10951)]